My Publications
1) Eiyad abu-nada,Abdelsalam Al-sarkhi,Yousef Zakaria 2005"Entropy   generation due to heat transfer and fluid flow over back ward facing step"ISSSE conference KOS-GREECE,
2)Saad odeh,Salem Nijmeh,M.sami Ashab,yousef zakaria,ahmad al amra 2004,"Design And Construction Of  A Single Axis Tracking Parabolic Trough Solar Collector for moderate tempreture applications" ,ISES conference ,EUROSUN2004 ,Vol1.1,pp527-532 ,Freiburg-Germany